单项选择题

How long did it take for the world's population to increase from 2 billion to 3 billion

A．304 years.
B．123 years.
C．33 years.
D．14 years.
<上一题 目录 下一题>
热门 试题

单项选择题
What was the worlds population in 1500
A．300 million.
B．310 million.
C．500 million.
D．510 million.
单项选择题
When will the world's population hit 10 billion
A．2010.
B．2002.
C．2036.
D．2054.
相关试题